World's Fastest Coaster

Superman: Escape from Krypton
This ride is very similar to Australia's Tower of Terror at the Dreamworld theme park. Both shared the title of the fastest amusement park ride on the planet since the trains were accelerated by the LSMs to 100 miles per hour. Six Flags bragged that this was the world's fastest roller coaster, but technical issues that delayed its opening allowed Tower of Terror to officially premiere first, so that coaster is considered to be the first amusement park ride to achieve 100 miles per hour.

The two rides are similar but not identical. The primary difference is that Superman has two tracks but Tower of Terror, which is actually called Tower of Terror II now, only has one track.

The World's Fastest Coaster - The first ride reaching 100 miles per hour.